From 4c290b51fae5de66a440de8cc446518f9346cd2b Mon Sep 17 00:00:00 2001
From: Matthew Foley <mattf@apache.org>
Date: Wed, 15 Jun 2011 22:24:07 +0000
Subject: [PATCH] HADOOP-7377. Fix command name handling affecting DFSAdmin.
 Contributed by Daryn Sharp.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1136223 13f79535-47bb-0310-9956-ffa450edef68
---
 common/CHANGES.txt                                      | 3 +++
 common/src/java/org/apache/hadoop/fs/shell/Command.java | 7 +++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/common/CHANGES.txt b/common/CHANGES.txt
index 7f84847920f..562c3554583 100644
--- a/common/CHANGES.txt
+++ b/common/CHANGES.txt
@@ -315,6 +315,9 @@ Trunk (unreleased changes)
     HADOOP-7390. VersionInfo not generated properly in git after unsplit. (todd
     via atm)
 
+    HADOOP-7377. Fix command name handling affecting DFSAdmin. (Daryn Sharp
+    via mattf)
+
 Release 0.22.0 - Unreleased
 
   INCOMPATIBLE CHANGES
diff --git a/common/src/java/org/apache/hadoop/fs/shell/Command.java b/common/src/java/org/apache/hadoop/fs/shell/Command.java
index f9efdfcfb09..b315afba494 100644
--- a/common/src/java/org/apache/hadoop/fs/shell/Command.java
+++ b/common/src/java/org/apache/hadoop/fs/shell/Command.java
@@ -20,6 +20,7 @@ package org.apache.hadoop.fs.shell;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.PrintStream;
+import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.LinkedList;
@@ -378,7 +379,7 @@ abstract public class Command extends Configured {
   public String getName() {
     return (name == null)
       ? getCommandField("NAME")
-      : name.startsWith("-") ? name.substring(1) : name; // this is a historical method
+      : name.startsWith("-") ? name.substring(1) : name;
   }
 
   /**
@@ -433,7 +434,9 @@ abstract public class Command extends Configured {
   private String getCommandField(String field) {
     String value;
     try {
-      value = this.getClass().getField(field).get(this).toString();
+      Field f = this.getClass().getDeclaredField(field);
+      f.setAccessible(true);
+      value = f.get(this).toString();
     } catch (Exception e) {
       throw new RuntimeException(
           "failed to get " + this.getClass().getSimpleName()+"."+field, e);